Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 6 22.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 06/22/2022   23:19:24   ( -72.83,   7.62) 06/22/2022   23:20:29  ( -72.74,  10.55)   96.89                65
 06/23/2022   00:09:53   (  71.92, 176.75) 06/23/2022   00:10:10  (  71.91, 176.67)    2.91                17
 06/23/2022   01:00:36   ( -71.85, -15.80) 06/23/2022   00:59:39  ( -71.84, -15.81)    0.53                57
 06/25/2022   14:46:26   (  72.70, -43.84) 06/25/2022   14:47:33  (  72.58, -41.51)   78.53                67
 06/25/2022   15:36:56   ( -71.96, 124.93) 06/25/2022   15:37:13  ( -71.93, 124.95)    3.35                17
 06/25/2022   16:27:41   (  71.86, -67.57) 06/25/2022   16:26:40  (  71.84, -67.57)    2.61                61
 06/28/2022   06:13:30   ( -72.74, -95.67) 06/28/2022   06:14:36  ( -72.65, -93.15)   84.05                66
 06/28/2022   07:04:02   (  71.98,  73.15) 06/28/2022   07:04:14  (  71.96,  73.25)    3.79                12
 06/28/2022   07:54:44   ( -71.86,-119.30) 06/28/2022   07:53:44  ( -71.85,-119.31)    0.90                60
 06/30/2022   21:40:32   (  72.56,-147.05) 06/30/2022   21:41:41  (  72.45,-145.27)   60.79                69
 06/30/2022   22:31:05   ( -71.98,  21.41) 06/30/2022   22:31:18  ( -71.97,  21.49)    3.26                13
 06/30/2022   23:21:50   (  71.88,-171.09) 06/30/2022   23:20:45  (  71.87,-171.04)    2.33                65
 07/03/2022   13:07:36   ( -72.62, 161.10) 07/03/2022   13:08:44  ( -72.50, 163.05)   66.56                68
 07/03/2022   13:58:10   (  71.95, -30.29) 07/03/2022   13:58:19  (  71.97, -30.26)    1.63                 9
 07/03/2022   14:48:53   ( -71.89, 137.16) 07/03/2022   14:47:49  ( -71.86, 137.19)    3.28                64